"The reason is to show our unhappiness with an institution which for a long time has been against the sexual and emotional rights of many people who do not practice exclusively reproductive sex or people who do not love each other in the way that the institution thinks is right," Ms Carole said.

Another of the organisers, Joan Perez, said about 300 people so far plan to attend.

He said there had been a bigger response to the initial Facebook page but it had been removed.

The idea for the protest was completely spontaneous, Mr Perez said. He added that the idea was to make a symbolic and completely peaceful protest.

The Pope will visit Santiago de Compostela, one of the Roman Catholic Church's holiest sites, on November 6.

He then travels to Barcelona for the November 7 consecration of Sagrada Familia, the emblematic building of architect Antoni Gaudi that has been under construction since 1882.